Maddie's Wiki- Measurement

Customary System

Weight

1 pound= 16 ounces
1 ton= 2,000 pounds

Length

1 foot= 12 inches
1 yard= 3 feet
1 mile= 5,280 feet
1 mile= 1,760 yards

Capacity

1 pint= 2 cups
1 quart= 2 pints
1 gallon= 4 quarts

These are the places where the customary system is used:

external image 800px-Metric_system.png

Metric System

Places who use the Metric System:

Length

1 millimeter= 0.001of a meter
1 centimeter= 0.01 of a meter
1 decimeter= 0.1 of a meter
1 kilometer= 1,000 meters

Capacity

1,000 millimeters=1liter
1 liter= 1,000 millimeters

Mass

1 gram= 0.001 kilogram
1 kilogram=1000 grams

Tips

I have learned that the prefix of a unit of measure can mean the place value of the unit.
Below is a chart of the meaning of the common prefixes.